My motor started shutting down completly intermitently while I was steaming along.I thought it was the ignition switch because if I held the key in the starting position the motor would start and stay running. But as soon as I let go of the key the motor would shut down. So on land while trouble shooting this latest of many challenges I tried crossing two of the terminals on the back of the ignition switch which enabled me to start the motor but the starter motor wont stop until I remove a battery terminal even if I turn the key off. So I thought I damaged the ignition switch and bought a new one. I still have the same problem. As soon as I hook up the battery the starter engages even with the key in the off position. So what did I fry. This motor has the control box in the stern with the starter cylinoid ,rectifiers ,voltage regulator ect in it. If not the ignition switch what can cause this. I look forward to your input and will thank you in advance.
Sounds to me as though your solenoid switch could be stuck closed. If you have a multimeter, with the battery disconnected, test for continuity between the terminal on the solenoid with the heavy gauge wire that goes to the battery and the terminal on the other side of the solenoid that has the wire to the starter. If there is continuity the solenoid switch is stuck closed and that is your problem. I suppose it could have been damaged if you hot wired it for a long period when you were fiddling with the wiring.
If there isn't continuity with the battery disconnected, then the solenoid is open as it should be. In this case you must have the wiring wrong between the ignition switch and the solenoid, or there is a short somewhere, so that the solenoid switch is powered as soon as you connect the battery.
If I remember correctly the solenoid power should come off the 'S' terminal of the ignition.
My money is on you don't have the ignition switch wired correctly. Could be a stuck solenoid, but you would have to be pretty unlucky to get two problems at the same instant. Your mis-wiring probably is energizing the solenoid when it isn't supposed to be.
Im pretty confident that I transfered the wires to the new ignition switch correctly as the new switch is labeled the same as the old.Besides I can take the old switch and put it back in and the started still engages as soon as the battery is hooked up. I think I will put my money on the solenoid and try replacing that. Thanks for the input. As always I new I could count on this site.